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Member postings for ega

Here is a list of all the postings ega has made in our forums. Click on a thread name to jump to the thread.

Thread: Pinkgrip
27/10/2018 17:27:39

If using Kingspan it may be worth considering the ply-faced version.

Thread: Myford Super 7 Serial Number Missing
27/10/2018 17:22:36

Brian Wood:

I didn't know about the code letter. Presumably this was done because Myford had a policy about the number of re-grinds that the bed could accept.

27/10/2018 17:03:52

The bed may have been re-ground/milled thereby erasing the serial. I think a pukka re-grinder would have re-stamped the number, however.

Thread: Expanding Mandrel
27/10/2018 11:47:15

Emgee:

Thanks for the link to an excellent video.

Thread: Does anyone recognize this grinder ?
27/10/2018 11:26:27

Andrew Johnston:

Don't you have to be registered with Dropbox?

Thread: Expanding Mandrel
27/10/2018 11:22:25

Vic:

Why not do what the traditional woodturner would do, turn a wooden mandrel and wring the work on to it?

You don't give any details of your job save that it's "some wood" so my suggestion may be inappropriate.

ARC sell some fancy (parallel) expanding mandrels.

Edited By ega on 27/10/2018 11:47:59

Thread: Getting the right 'feel' on a captive adjuster nut
26/10/2018 15:11:27

Kealan O'Carroll:

Your photos show two notably well-made items and have prompted me to add a dial gauge to my own simple hard stop. I am aware of the danger of over-clamping the stem of the gauge and wonder how the one in your photo is retained; it looks as though it might just be a pinch screw?

Incidentally, am I right in thinking that the block in the first photo slides on and is clamped to both the lathe bed and the stop rod?

Thread: Drilling Bronze?
26/10/2018 14:04:36

larry phelan 1:

Spot on!

Sparey and other classic titles should be in every ME's library.

Edited By ega on 26/10/2018 14:05:40

Thread: Good morning
26/10/2018 12:05:18
Posted by Neil Wyatt on 26/10/2018 10:53:58:

Welcome to the forum Chris.

One bit of advice from the start use the sharpest tools possible for plastics

Neil

For this purpose, a good friend recommended the fingernail test: lightly graze the tool against a finger nail at an acute angle; the tool should catch against the nail.

Thread: wood turning
25/10/2018 12:54:57

Vic:

On the possibility of the wood moving, obviously Messrs Parris know their business but I did wonder whether cleaving the blank rather than just sawing it would have helped; they seem to be getting the necessary straight grain by rigorous selection.

I suspect that an excellent cue could be made by machine methods with non-wood materials but it seems that the players are a conservative, perhaps even superstitious, group of people who stick to what they know. If this means the fostering of hand skills then I am all for it!

Thread: Boring heads
25/10/2018 12:39:40

On the theme of hand-held hole saws:

Thread: wood turning
25/10/2018 11:58:46

Derek Lane 2:

Looking at your second photo, were you third equal?

I very much like those plates.

Thread: Boring heads
24/10/2018 23:46:07
Posted by not done it yet on 24/10/2018 22:01:25:

When I have cut out discs for aluminium gears, I have used Starret/Bosch hole saws. Rather cheaper system than rotabroaches. Can get you close to finished size.

Certainly cheaper, and fine when they will do the job. I have often found chip clearance a potential problem with holesaws when used on thick material, often necessitating frequent stops to clear and add lubricant. When, as with gear blanks, the middle rather than the hole is the object, I find it helpful to arrange things so that the kerf runs out at one or more points thus allowing the chips an easier exit.

Apart from the fact that the Rotabroach type of cutter has flutes for chip clearance it has the added advantage that it cuts closer to size and, further, a pilot is not necessary so that the resultant slug has no central hole.

Thread: wood turning
24/10/2018 21:43:36

Derek Lane 2:

It is a long time since I visited the Woodworker exhibition at the Palace but I am sure I should have remembered your piece if I had had the pleasure of seeing it in the wood.

Hollowing the sphere and managing the lid must have taken some planning!

24/10/2018 21:38:35

Vic:

Fascinating video and an object lesson in what can be done with simple tools. The long vee block or sticking board that the plane wielder uses takes care of what could be a stability problem on the lathe (and I notice that he very properly puts the plane down on its side when it is not in use).

R O'S was surprisingly good.

Thread: BMW 3D printer to make spare parts on the road
24/10/2018 17:08:17

Didn't BMW run a spoof ad touting remote monitoring of tire pressures and hasn't that come to pass?

I well remember the steering wheel which could be moved from one side of the car to the other.

Thread: Boring heads
24/10/2018 16:58:17

Of course, if you have access to a large Rotabroach you will have an easier time to start with and a nicer bit in the middle.

Thread: wood turning
24/10/2018 16:54:36

KWIL and Vic:

Excellent video - thank you.

My impression is that only the splice is planed; there was a shot of what looked like a lathe near the start.

Some interesting similarities with metalworking: seasoning the stock and rolling on surface plate to check for straightness.

Thread: Mikron Lathe Help needed
24/10/2018 14:01:37
Posted by Michael Gilligan on 24/10/2018 12:26:57:
Posted by Nick Palliser on 24/10/2018 11:33:53:
Posted by ega on 24/10/2018 11:29:51:

Is the register the taper behind the thread as opposed to the parallel portion behind the taper?

Please forgive my ignorance, but I don't understand what that means.

.

Nick,

The majority of lathes with screw-on chucks have a plain [cylindrical] register 'after' the thread.

Yours appears to have a cone [which would be much nicer]

MichaelG.

Apologies and thanks respectively to the above.

The Mikron spindle seems to combine the advantages of both taper and threaded spindles.

Thread: wood turning
24/10/2018 13:55:38
Posted by Ian S C on 24/10/2018 12:43:32:

For turning wooden balls, get a bit of steel tube and make sure the cutting end is square and sharpen it like a leather punch with the taper on the outside, use this tool after you have roughed out the ball using the whole front edge to cut. To get a number of uniform sized balls, just make then the size of the bore of the tube, when the ball is to size it just pops into the tube.

Good point. GHT covers this procedure in his Manual where he mentions that the method was used for turning billiard balls.

That reminds me that there is a specialised trade in the manufacture and maintenance of cues; I wonder if they employ hand turning.

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